7939785090 has 16 divisors (see below), whose sum is σ = 19055484288. Its totient is φ = 2117276016.

The previous prime is 7939785047. The next prime is 7939785109. The reversal of 7939785090 is 905879397.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7939785090.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132329722 + ... + 132329781.

It is an arithmetic number, because the mean of its divisors is an integer number (1190967768).

Almost surely, 2^7939785090 is an apocalyptic number.

7939785090 is an abundant number, since it is smaller than the sum of its proper divisors (11115699198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7939785090 is a wasteful number, since it uses less digits than its factorization.

7939785090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264659513.

The product of its (nonzero) digits is 4286520, while the sum is 57.

The square root of 7939785090 is about 89105.4717175101. The cubic root of 7939785090 is about 1994.9694482165.

The spelling of 7939785090 in words is "seven billion, nine hundred thirty-nine million, seven hundred eighty-five thousand, ninety".